Ausgehend von Toluoldithiol werden einige ein fache 1,3-Benzdithiyliumsalze (1,3-Dithiahydrindeniumsalze) sowie das Bis-5-methyl-l,3-benzdithiylium-mono- und -trimethincyanin synthetisiert.
Generation of 2-lithio-2-(methylthio)-1,3-benzodithioles, new carboxyl carbanion equivalents, and their application to the syntheses of unsymmetrical hexathioorthooxalates
作者:Charles Allan Brown、Robert D. Miller、Charles M. Lindsay、Keith Smith
DOI:10.1016/s0040-4039(01)80082-4
日期:1984.1
by deprotonation of 2-(methyl-thio)-1,3-benzodithioles with n-butyllithium in THF; these anions are protonated (aqueous NH4Cl) or methylated (MeI) as expected, but undergo an unexpected, overall carbophilic addition reaction with cyclic trithiocarbonates to yield, after alkylation, unsymmetrical hexathioorthooxalates, compounds which have been difficult to prepare by traditional methods.
作者:Keith Smith、Charles M. Lindsay、Gareth J. Pritchard
DOI:10.1021/ja00184a040
日期:1989.1
treatment with electrophiles provides a convenient approach to ortho-substituted arenethiol derivatives. The reactions with tetraisopropylthiuram disulfide provide direct access to the corresponding o-phenylene trithiocarbonates. Double lithiation of 4-methoxybenzenethiol results in C-lithiation adjacent to the methoxy group rather than the thiolate residue, indicating that methoxy is a more powerfully ortho-directing
Alkyl and aryl isothiocyanates as masked primary amines
作者:Cheon-Gyu Cho、Gary H. Posner
DOI:10.1016/s0040-4039(00)92512-7
日期:1992.6
Primary and secondary (but not tertiary) alkyl as well as aryl isothiocyanates react rapidly with 4-methyl-1,2-benzenedithiol (1) in methanol at room temperature, releasing the corresponding amines in good yields. This mild and simple procedure for unmasking amines proceeds chemospecifically with isothiocyanates even in the presence of such normally electrophilic and reactive functionalities as carboxylate ester and N-alkylphthalimide.
Tetramethyldibenzotetrathiafulvalene and asymmetric ethylenedithiodithiadiheterafulvalenes
作者:L. M. Gol'denberg、M. Z. Aldoshina、K. N. Lyubovskaya、T. A. Chibisova、V. Ya. Rodionov、V. Yu. Khodorkovskii、O. Ya. Neiland